Data usage

As you may or may not know the Hero is available in the UK on a range of networks who offer varying fair usage limits on their inclusive internet access tariffs - from 500meg to 3gig it seems.

The question is how much data can you reasonably expect to use a month of the hero? Bearing in mind all its widgets, google maps, market downloads etc. I'm rather concerned that Orange's 500MB allowance is worryingly low. I could go with t-mobile's 3GB plan, but then I'd be stuck with their black version of the device.

I have an unlocked Magic on Orange with the 500MB "unlimited" internet add-on. I do regular surfing on BBC News, Facebook, Google Maps etc. and have not gone anywhere near the limit. Like others I usually turn on WiFi when I get home and save any large downloading for then.